Japanese beetle spreads through Alpine wine country, alarming farmers

Japanese beetles are advancing through northern Italy's vineyards and orchards, frustrating farmers in Valle d'Aosta and surrounding Alpine regions, according to reporting from AP News and The Sun Chronicle. The pest, Popillia japonica, has been documented on vine leaves in Pont-Saint-Martin and other sites across the valley, where it feeds on foliage and can devastate crops if left unchecked. For Valle d'Aosta, a region whose economy depends substantially on wine production and mountain-grown fruit, the beetle's spread represents a direct threat to agricultural income and regional food security.

Vittorio Costabloz, vice-president of a regional agricultural association cited in the AP and Sun Chronicle accounts, expressed frustration with the beetle's advance. The pest's presence in Valle d'Aosta marks a significant northward expansion from earlier detections in Lombardy and other lowland regions of northern Italy. The aerial imagery published by the international outlets shows vineyards in Donnas and surrounding communes—the heart of the valley's wine belt—now under threat from an insect that feeds voraciously during its larval and adult stages, consuming leaf tissue and weakening plant vigor.